package com.work;

import java.util.Random;
import java.util.Scanner;

public class Exercise {
    /**
     *  启动类，运行主函数
     */
    public static void main(String[] args) {
        Random random = new Random();
        BinaryOperation f = new BinaryOperation(random);
        Scanner scan = new Scanner(System.in);
        System.out.println("----------选择你想选择的模式'1'混合加减，'2'加法 '3'减法 '4/test'手动输入测试---------" );
        f.start(scan);
    }
}
